<報文>ヘマタイトとマグネタイトの混合鉱石による非焼成ペレットの強度と被還元性

概要

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In the viewpoint of energy saving of ironmaking industries, physical and chemical properties of cement-bonded pellets, so called nonfired pellets, made from hematite and magnetite ores which were produced in Mexico were examined as new burden materials, and then the mixing effect of hematite and magnetite ores was also investigated. In comparison with nonfired hematite pellets, magnetite pellet had lower content of combined water, however, it showed bad properties with crushing strength, reducibility, volume expansion and rate retardation during reduction. It was found that reducibility of magnetite pellet was enhanced more than increase of mixing ratio by addition of hematite to magnetite ore, and rate retardation during H_2-reduction of magnetite pellet was also improved by the same treatment. Therefore, it was essentially concluded that the addition of hematite to magnetite were effective to improve the properties of magnetite pellets.cement-bonded pelletsnonfired pelletscrushing strengthreducibilityhematite oremagnetite oremixing effect
東北大学の論文
1991-12-27